package com.yueman.ptoolopenticket.ticket.utils.lixin;

import java.io.UnsupportedEncodingException;

public class Base64 {

	private static char[] base64EncodeChars = new char[] { 'A', 'B', 'C', 'D',
			'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q',
			'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
			'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
			'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3',
			'4', '5', '6', '7', '8', '9', '+', '/' };

	private static byte[] base64DecodeChars = new byte[] { -1, -1, -1, -1, -1,
			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
			-1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59,
			60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
			10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1,
			-1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
			38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1,
			-1, -1 };

	// ����
	public static String encode(byte[] data) {
		StringBuffer sb = new StringBuffer();
		int len = data.length;
		int i = 0;
		int b1, b2, b3;
		while (i < len) {
			b1 = data[i++] & 0xff;
			if (i == len) {
				sb.append(base64EncodeChars[b1 >>> 2]);
				sb.append(base64EncodeChars[(b1 & 0x3) << 4]);
				sb.append("==");
				break;
			}
			b2 = data[i++] & 0xff;
			if (i == len) {
				sb.append(base64EncodeChars[b1 >>> 2]);
				sb.append(base64EncodeChars[((b1 & 0x03) << 4)
						| ((b2 & 0xf0) >>> 4)]);
				sb.append(base64EncodeChars[(b2 & 0x0f) << 2]);
				sb.append("=");
				break;
			}
			b3 = data[i++] & 0xff;
			sb.append(base64EncodeChars[b1 >>> 2]);
			sb.append(base64EncodeChars[((b1 & 0x03) << 4)
					| ((b2 & 0xf0) >>> 4)]);
			sb.append(base64EncodeChars[((b2 & 0x0f) << 2)
					| ((b3 & 0xc0) >>> 6)]);
			sb.append(base64EncodeChars[b3 & 0x3f]);
		}
		return sb.toString();
	}

	// ����
	public static byte[] decode(String str) throws UnsupportedEncodingException {
		StringBuffer sb = new StringBuffer();
		byte[] data = str.getBytes("US-ASCII");
		int len = data.length;
		int i = 0;
		int b1, b2, b3, b4;
		while (i < len) {
			/* b1 */
			do {
				b1 = base64DecodeChars[data[i++]];
			} while (i < len && b1 == -1);
			if (b1 == -1)
				break;
			/* b2 */
			do {
				b2 = base64DecodeChars[data[i++]];
			} while (i < len && b2 == -1);
			if (b2 == -1)
				break;
			sb.append((char) ((b1 << 2) | ((b2 & 0x30) >>> 4)));
			/* b3 */
			do {
				b3 = data[i++];
				if (b3 == 61)
					return sb.toString().getBytes("iso8859-1");
				b3 = base64DecodeChars[b3];
			} while (i < len && b3 == -1);
			if (b3 == -1)
				break;
			sb.append((char) (((b2 & 0x0f) << 4) | ((b3 & 0x3c) >>> 2)));
			/* b4 */
			do {
				b4 = data[i++];
				if (b4 == 61)
					return sb.toString().getBytes("iso8859-1");
				b4 = base64DecodeChars[b4];
			} while (i < len && b4 == -1);
			if (b4 == -1)
				break;
			sb.append((char) (((b3 & 0x03) << 6) | b4));
		}
		return sb.toString().getBytes("iso8859-1");
	}
	
	public static String encode(byte[] data, int count){
		byte[] datas=data;
		for(int i=0;i<count;i++){
			datas=encode(datas).getBytes();			
		}
		return new String(datas);
	}

	public static String decode(String str, int count) {
		String strs=str;
		try {
			
			for (int i = 0; i < count; i++) {
				strs = new String(decode(strs));
			}
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
			
		}finally{
			return strs;
		}
	}
	public static void main(String[] args) {
		String pwd="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";
		try {
			//String miws=encode(mingw.getBytes(),3);
			System.out.println(encode("898610183980052".getBytes()));
			System.out.println(new String(decode("MTExMTEx")));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}
